Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1989 insertions, 0 deletions

diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
new file mode 100644
index 000000000..7405fab32
--- /dev/null
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -0,0 +1,1989 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*******************************************************************************
+ * This file contains tcm implementation using v4 configfs fabric infrastructure
+ * for QLogic target mode HBAs
+ *
+ * (c) Copyright 2010-2013 Datera, Inc.
+ *
+ * Author: Nicholas A. Bellinger <nab@daterainc.com>
+ *
+ * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
+ * the TCM_FC / Open-FCoE.org fabric module.
+ *
+ * Copyright (c) 2010 Cisco Systems, Inc
+ *
+ ****************************************************************************/
+
+
+#include <linux/module.h>
+#include <linux/utsname.h>
+#include <linux/vmalloc.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/configfs.h>
+#include <linux/ctype.h>
+#include <asm/unaligned.h>
+#include <scsi/scsi_host.h>
+#include <target/target_core_base.h>
+#include <target/target_core_fabric.h>
+
+#include "qla_def.h"
+#include "qla_target.h"
+#include "tcm_qla2xxx.h"
+
+static struct workqueue_struct *tcm_qla2xxx_free_wq;
+
+/*
+ * Parse WWN.
+ * If strict, we require lower-case hex and colon separators to be sure
+ * the name is the same as what would be generated by ft_format_wwn()
+ * so the name and wwn are mapped one-to-one.
+ */
+static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
+{
+	const char *cp;
+	char c;
+	u32 nibble;
+	u32 byte = 0;
+	u32 pos = 0;
+	u32 err;
+
+	*wwn = 0;
+	for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
+		c = *cp;
+		if (c == '\n' && cp[1] == '\0')
+			continue;
+		if (strict && pos++ == 2 && byte++ < 7) {
+			pos = 0;
+			if (c == ':')
+				continue;
+			err = 1;
+			goto fail;
+		}
+		if (c == '\0') {
+			err = 2;
+			if (strict && byte != 8)
+				goto fail;
+			return cp - name;
+		}
+		err = 3;
+		if (isdigit(c))
+			nibble = c - '0';
+		else if (isxdigit(c) && (islower(c) || !strict))
+			nibble = tolower(c) - 'a' + 10;
+		else
+			goto fail;
+		*wwn = (*wwn << 4) | nibble;
+	}
+	err = 4;
+fail:
+	pr_debug("err %u len %zu pos %u byte %u\n",
+			err, cp - name, pos, byte);
+	return -1;
+}
+
+static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
+{
+	u8 b[8];
+
+	put_unaligned_be64(wwn, b);
+	return snprintf(buf, len,
+		"%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
+		b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
+}
+
+/*
+ * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
+ */
+static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
+{
+	unsigned int i, j;
+	u8 wwn[8];
+
+	memset(wwn, 0, sizeof(wwn));
+
+	/* Validate and store the new name */
+	for (i = 0, j = 0; i < 16; i++) {
+		int value;
+
+		value = hex_to_bin(*ns++);
+		if (value >= 0)
+			j = (j << 4) | value;
+		else
+			return -EINVAL;
+
+		if (i % 2) {
+			wwn[i/2] = j & 0xff;
+			j = 0;
+		}
+	}
+
+	*nm = wwn_to_u64(wwn);
+	return 0;
+}
+
+/*
+ * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
+ * store_fc_host_vport_create()
+ */
+static int tcm_qla2xxx_npiv_parse_wwn(
+	const char *name,
+	size_t count,
+	u64 *wwpn,
+	u64 *wwnn)
+{
+	unsigned int cnt = count;
+	int rc;
+
+	*wwpn = 0;
+	*wwnn = 0;
+
+	/* count may include a LF at end of string */
+	if (name[cnt-1] == '\n' || name[cnt-1] == 0)
+		cnt--;
+
+	/* validate we have enough characters for WWPN */
+	if ((cnt != (16+1+16)) || (name[16] != ':'))
+		return -EINVAL;
+
+	rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
+	if (rc != 0)
+		return rc;
+
+	rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
+	if (rc != 0)
+		return rc;
+
+	return 0;
+}
+
+static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
+{
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+				struct tcm_qla2xxx_tpg, se_tpg);
+	struct tcm_qla2xxx_lport *lport = tpg->lport;
+
+	return lport->lport_naa_name;
+}
+
+static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
+{
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+				struct tcm_qla2xxx_tpg, se_tpg);
+	return tpg->lport_tpgt;
+}
+
+static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
+{
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+				struct tcm_qla2xxx_tpg, se_tpg);
+
+	return tpg->tpg_attrib.generate_node_acls;
+}
+
+static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
+{
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+				struct tcm_qla2xxx_tpg, se_tpg);
+
+	return tpg->tpg_attrib.cache_dynamic_acls;
+}
+
+static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
+{
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+				struct tcm_qla2xxx_tpg, se_tpg);
+
+	return tpg->tpg_attrib.demo_mode_write_protect;
+}
+
+static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
+{
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+				struct tcm_qla2xxx_tpg, se_tpg);
+
+	return tpg->tpg_attrib.prod_mode_write_protect;
+}
+
+static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
+{
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+				struct tcm_qla2xxx_tpg, se_tpg);
+
+	return tpg->tpg_attrib.demo_mode_login_only;
+}
+
+static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
+{
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+				struct tcm_qla2xxx_tpg, se_tpg);
+
+	return tpg->tpg_attrib.fabric_prot_type;
+}
+
+static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
+{
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+				struct tcm_qla2xxx_tpg, se_tpg);
+
+	return tpg->lport_tpgt;
+}
+
+static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
+{
+	struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
+			struct qla_tgt_mgmt_cmd, free_work);
+
+	transport_generic_free_cmd(&mcmd->se_cmd, 0);
+}
+
+/*
+ * Called from qla_target_template->free_mcmd(), and will call
+ * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
+ * release callback.  qla_hw_data->hardware_lock is expected to be held
+ */
+static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
+{
+	if (!mcmd)
+		return;
+	INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
+	queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
+}
+
+static void tcm_qla2xxx_complete_free(struct work_struct *work)
+{
+	struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
+
+	cmd->cmd_in_wq = 0;
+
+	WARN_ON(cmd->trc_flags & TRC_CMD_FREE);
+
+	/* To do: protect all tgt_counters manipulations with proper locking. */
+	cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++;
+	cmd->trc_flags |= TRC_CMD_FREE;
+	cmd->cmd_sent_to_fw = 0;
+
+	transport_generic_free_cmd(&cmd->se_cmd, 0);
+}
+
+static struct qla_tgt_cmd *tcm_qla2xxx_get_cmd(struct fc_port *sess)
+{
+	struct se_session *se_sess = sess->se_sess;
+	struct qla_tgt_cmd *cmd;
+	int tag, cpu;
+
+	tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu);
+	if (tag < 0)
+		return NULL;
+
+	cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
+	memset(cmd, 0, sizeof(struct qla_tgt_cmd));
+	cmd->se_cmd.map_tag = tag;
+	cmd->se_cmd.map_cpu = cpu;
+
+	return cmd;
+}
+
+static void tcm_qla2xxx_rel_cmd(struct qla_tgt_cmd *cmd)
+{
+	target_free_tag(cmd->sess->se_sess, &cmd->se_cmd);
+}
+
+/*
+ * Called from qla_target_template->free_cmd(), and will call
+ * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
+ * release callback.  qla_hw_data->hardware_lock is expected to be held
+ */
+static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
+{
+	cmd->qpair->tgt_counters.core_qla_free_cmd++;
+	cmd->cmd_in_wq = 1;
+
+	WARN_ON(cmd->trc_flags & TRC_CMD_DONE);
+	cmd->trc_flags |= TRC_CMD_DONE;
+
+	INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
+	queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
+}
+
+/*
+ * Called from struct target_core_fabric_ops->check_stop_free() context
+ */
+static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
+{
+	struct qla_tgt_cmd *cmd;
+
+	if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
+		cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
+		cmd->trc_flags |= TRC_CMD_CHK_STOP;
+	}
+
+	return target_put_sess_cmd(se_cmd);
+}
+
+/* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
+ * fabric descriptor @se_cmd command to release
+ */
+static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
+{
+	struct qla_tgt_cmd *cmd;
+
+	if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
+		struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
+				struct qla_tgt_mgmt_cmd, se_cmd);
+		qlt_free_mcmd(mcmd);
+		return;
+	}
+	cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
+
+	if (WARN_ON(cmd->cmd_sent_to_fw))
+		return;
+
+	qlt_free_cmd(cmd);
+}
+
+static void tcm_qla2xxx_release_session(struct kref *kref)
+{
+	struct fc_port  *sess = container_of(kref,
+	    struct fc_port, sess_kref);
+
+	qlt_unreg_sess(sess);
+}
+
+static void tcm_qla2xxx_put_sess(struct fc_port *sess)
+{
+	if (!sess)
+		return;
+
+	kref_put(&sess->sess_kref, tcm_qla2xxx_release_session);
+}
+
+static void tcm_qla2xxx_close_session(struct se_session *se_sess)
+{
+	struct fc_port *sess = se_sess->fabric_sess_ptr;
+	struct scsi_qla_host *vha;
+	unsigned long flags;
+
+	BUG_ON(!sess);
+	vha = sess->vha;
+
+	spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
+	target_sess_cmd_list_set_waiting(se_sess);
+	spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
+
+	sess->explicit_logout = 1;
+	tcm_qla2xxx_put_sess(sess);
+}
+
+static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
+{
+	return 0;
+}
+
+static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
+{
+	struct qla_tgt_cmd *cmd = container_of(se_cmd,
+				struct qla_tgt_cmd, se_cmd);
+
+	if (cmd->aborted) {
+		/* Cmd can loop during Q-full.  tcm_qla2xxx_aborted_task
+		 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
+		 * already kick start the free.
+		 */
+		pr_debug("write_pending aborted cmd[%p] refcount %d "
+			"transport_state %x, t_state %x, se_cmd_flags %x\n",
+			cmd, kref_read(&cmd->se_cmd.cmd_kref),
+			cmd->se_cmd.transport_state,
+			cmd->se_cmd.t_state,
+			cmd->se_cmd.se_cmd_flags);
+		transport_generic_request_failure(&cmd->se_cmd,
+			TCM_CHECK_CONDITION_ABORT_CMD);
+		return 0;
+	}
+	cmd->trc_flags |= TRC_XFR_RDY;
+	cmd->bufflen = se_cmd->data_length;
+	cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
+
+	cmd->sg_cnt = se_cmd->t_data_nents;
+	cmd->sg = se_cmd->t_data_sg;
+
+	cmd->prot_sg_cnt = se_cmd->t_prot_nents;
+	cmd->prot_sg = se_cmd->t_prot_sg;
+	cmd->blk_sz  = se_cmd->se_dev->dev_attrib.block_size;
+	se_cmd->pi_err = 0;
+
+	/*
+	 * qla_target.c:qlt_rdy_to_xfer() will call dma_map_sg() to setup
+	 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
+	 */
+	return qlt_rdy_to_xfer(cmd);
+}
+
+static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
+{
+	return;
+}
+
+static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
+{
+	if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
+		struct qla_tgt_cmd *cmd = container_of(se_cmd,
+				struct qla_tgt_cmd, se_cmd);
+		return cmd->state;
+	}
+
+	return 0;
+}
+
+/*
+ * Called from process context in qla_target.c:qlt_do_work() code
+ */
+static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
+	unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
+	int data_dir, int bidi)
+{
+	struct se_cmd *se_cmd = &cmd->se_cmd;
+	struct se_session *se_sess;
+	struct fc_port *sess;
+#ifdef CONFIG_TCM_QLA2XXX_DEBUG
+	struct se_portal_group *se_tpg;
+	struct tcm_qla2xxx_tpg *tpg;
+#endif
+	int flags = TARGET_SCF_ACK_KREF;
+
+	if (bidi)
+		flags |= TARGET_SCF_BIDI_OP;
+
+	if (se_cmd->cpuid != WORK_CPU_UNBOUND)
+		flags |= TARGET_SCF_USE_CPUID;
+
+	sess = cmd->sess;
+	if (!sess) {
+		pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n");
+		return -EINVAL;
+	}
+
+	se_sess = sess->se_sess;
+	if (!se_sess) {
+		pr_err("Unable to locate active struct se_session\n");
+		return -EINVAL;
+	}
+
+#ifdef CONFIG_TCM_QLA2XXX_DEBUG
+	se_tpg = se_sess->se_tpg;
+	tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg);
+	if (unlikely(tpg->tpg_attrib.jam_host)) {
+		/* return, and dont run target_submit_cmd,discarding command */
+		return 0;
+	}
+#endif
+
+	cmd->qpair->tgt_counters.qla_core_sbt_cmd++;
+	return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
+				cmd->unpacked_lun, data_length, fcp_task_attr,
+				data_dir, flags);
+}
+
+static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
+{
+	struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
+
+	/*
+	 * Ensure that the complete FCP WRITE payload has been received.
+	 * Otherwise return an exception via CHECK_CONDITION status.
+	 */
+	cmd->cmd_in_wq = 0;
+	cmd->cmd_sent_to_fw = 0;
+	if (cmd->aborted) {
+		transport_generic_request_failure(&cmd->se_cmd,
+			TCM_CHECK_CONDITION_ABORT_CMD);
+		return;
+	}
+
+	cmd->qpair->tgt_counters.qla_core_ret_ctio++;
+	if (!cmd->write_data_transferred) {
+		switch (cmd->dif_err_code) {
+		case DIF_ERR_GRD:
+			cmd->se_cmd.pi_err =
+			    TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
+			break;
+		case DIF_ERR_REF:
+			cmd->se_cmd.pi_err =
+			    TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
+			break;
+		case DIF_ERR_APP:
+			cmd->se_cmd.pi_err =
+			    TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
+			break;
+		case DIF_ERR_NONE:
+		default:
+			break;
+		}
+
+		if (cmd->se_cmd.pi_err)
+			transport_generic_request_failure(&cmd->se_cmd,
+				cmd->se_cmd.pi_err);
+		else
+			transport_generic_request_failure(&cmd->se_cmd,
+				TCM_CHECK_CONDITION_ABORT_CMD);
+
+		return;
+	}
+
+	return target_execute_cmd(&cmd->se_cmd);
+}
+
+/*
+ * Called from qla_target.c:qlt_do_ctio_completion()
+ */
+static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
+{
+	cmd->trc_flags |= TRC_DATA_IN;
+	cmd->cmd_in_wq = 1;
+	INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
+	queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
+}
+
+static int tcm_qla2xxx_chk_dif_tags(uint32_t tag)
+{
+	return 0;
+}
+
+static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd,
+    uint16_t *pfw_prot_opts)
+{
+	struct se_cmd *se_cmd = &cmd->se_cmd;
+
+	if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD))
+		*pfw_prot_opts |= PO_DISABLE_GUARD_CHECK;
+
+	if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG))
+		*pfw_prot_opts |= PO_DIS_APP_TAG_VALD;
+
+	return 0;
+}
+
+/*
+ * Called from qla_target.c:qlt_issue_task_mgmt()
+ */
+static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun,
+	uint16_t tmr_func, uint32_t tag)
+{
+	struct fc_port *sess = mcmd->sess;
+	struct se_cmd *se_cmd = &mcmd->se_cmd;
+	int transl_tmr_func = 0;
+	int flags = TARGET_SCF_ACK_KREF;
+
+	switch (tmr_func) {
+	case QLA_TGT_ABTS:
+		pr_debug("%ld: ABTS received\n", sess->vha->host_no);
+		transl_tmr_func = TMR_ABORT_TASK;
+		flags |= TARGET_SCF_LOOKUP_LUN_FROM_TAG;
+		break;
+	case QLA_TGT_2G_ABORT_TASK:
+		pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no);
+		transl_tmr_func = TMR_ABORT_TASK;
+		break;
+	case QLA_TGT_CLEAR_ACA:
+		pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no);
+		transl_tmr_func = TMR_CLEAR_ACA;
+		break;
+	case QLA_TGT_TARGET_RESET:
+		pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no);
+		transl_tmr_func = TMR_TARGET_WARM_RESET;
+		break;
+	case QLA_TGT_LUN_RESET:
+		pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no);
+		transl_tmr_func = TMR_LUN_RESET;
+		break;
+	case QLA_TGT_CLEAR_TS:
+		pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no);
+		transl_tmr_func = TMR_CLEAR_TASK_SET;
+		break;
+	case QLA_TGT_ABORT_TS:
+		pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no);
+		transl_tmr_func = TMR_ABORT_TASK_SET;
+		break;
+	default:
+		pr_debug("%ld: Unknown task mgmt fn 0x%x\n",
+		    sess->vha->host_no, tmr_func);
+		return -ENOSYS;
+	}
+
+	return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
+	    transl_tmr_func, GFP_ATOMIC, tag, flags);
+}
+
+static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess,
+    uint64_t tag)
+{
+	struct qla_tgt_cmd *cmd = NULL;
+	struct se_cmd *secmd;
+	unsigned long flags;
+
+	if (!sess->se_sess)
+		return NULL;
+
+	spin_lock_irqsave(&sess->se_sess->sess_cmd_lock, flags);
+	list_for_each_entry(secmd, &sess->se_sess->sess_cmd_list, se_cmd_list) {
+		/* skip task management functions, including tmr->task_cmd */
+		if (secmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
+			continue;
+
+		if (secmd->tag == tag) {
+			cmd = container_of(secmd, struct qla_tgt_cmd, se_cmd);
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&sess->se_sess->sess_cmd_lock, flags);
+
+	return cmd;
+}
+
+static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
+{
+	struct qla_tgt_cmd *cmd = container_of(se_cmd,
+				struct qla_tgt_cmd, se_cmd);
+
+	if (cmd->aborted) {
+		/* Cmd can loop during Q-full.  tcm_qla2xxx_aborted_task
+		 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
+		 * already kick start the free.
+		 */
+		pr_debug("queue_data_in aborted cmd[%p] refcount %d "
+			"transport_state %x, t_state %x, se_cmd_flags %x\n",
+			cmd, kref_read(&cmd->se_cmd.cmd_kref),
+			cmd->se_cmd.transport_state,
+			cmd->se_cmd.t_state,
+			cmd->se_cmd.se_cmd_flags);
+		return 0;
+	}
+
+	cmd->trc_flags |= TRC_XMIT_DATA;
+	cmd->bufflen = se_cmd->data_length;
+	cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
+
+	cmd->sg_cnt = se_cmd->t_data_nents;
+	cmd->sg = se_cmd->t_data_sg;
+	cmd->offset = 0;
+
+	cmd->prot_sg_cnt = se_cmd->t_prot_nents;
+	cmd->prot_sg = se_cmd->t_prot_sg;
+	cmd->blk_sz  = se_cmd->se_dev->dev_attrib.block_size;
+	se_cmd->pi_err = 0;
+
+	/*
+	 * Now queue completed DATA_IN the qla2xxx LLD and response ring
+	 */
+	return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
+				se_cmd->scsi_status);
+}
+
+static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
+{
+	struct qla_tgt_cmd *cmd = container_of(se_cmd,
+				struct qla_tgt_cmd, se_cmd);
+	int xmit_type = QLA_TGT_XMIT_STATUS;
+
+	if (cmd->aborted) {
+		/*
+		 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
+		 * can get ahead of this cmd. tcm_qla2xxx_aborted_task
+		 * already kick start the free.
+		 */
+		pr_debug(
+		    "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n",
+		    cmd, kref_read(&cmd->se_cmd.cmd_kref),
+		    cmd->se_cmd.transport_state, cmd->se_cmd.t_state,
+		    cmd->se_cmd.se_cmd_flags);
+		return 0;
+	}
+	cmd->bufflen = se_cmd->data_length;
+	cmd->sg = NULL;
+	cmd->sg_cnt = 0;
+	cmd->offset = 0;
+	cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
+	cmd->trc_flags |= TRC_XMIT_STATUS;
+
+	if (se_cmd->data_direction == DMA_FROM_DEVICE) {
+		/*
+		 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
+		 * for qla_tgt_xmit_response LLD code
+		 */
+		if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
+			se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
+			se_cmd->residual_count = 0;
+		}
+		se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
+		se_cmd->residual_count += se_cmd->data_length;
+
+		cmd->bufflen = 0;
+	}
+	/*
+	 * Now queue status response to qla2xxx LLD code and response ring
+	 */
+	return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
+}
+
+static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
+{
+	struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
+	struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
+				struct qla_tgt_mgmt_cmd, se_cmd);
+
+	pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
+			mcmd, se_tmr->function, se_tmr->response);
+	/*
+	 * Do translation between TCM TM response codes and
+	 * QLA2xxx FC TM response codes.
+	 */
+	switch (se_tmr->response) {
+	case TMR_FUNCTION_COMPLETE:
+		mcmd->fc_tm_rsp = FC_TM_SUCCESS;
+		break;
+	case TMR_TASK_DOES_NOT_EXIST:
+		mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
+		break;
+	case TMR_FUNCTION_REJECTED:
+		mcmd->fc_tm_rsp = FC_TM_REJECT;
+		break;
+	case TMR_LUN_DOES_NOT_EXIST:
+	default:
+		mcmd->fc_tm_rsp = FC_TM_FAILED;
+		break;
+	}
+	/*
+	 * Queue the TM response to QLA2xxx LLD to build a
+	 * CTIO response packet.
+	 */
+	qlt_xmit_tm_rsp(mcmd);
+}
+
+static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
+{
+	struct qla_tgt_cmd *cmd = container_of(se_cmd,
+				struct qla_tgt_cmd, se_cmd);
+
+	if (qlt_abort_cmd(cmd))
+		return;
+}
+
+static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
+			struct tcm_qla2xxx_nacl *, struct fc_port *);
+/*
+ * Expected to be called with struct qla_hw_data->tgt.sess_lock held
+ */
+static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess)
+{
+	struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
+	struct se_portal_group *se_tpg = se_nacl->se_tpg;
+	struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
+	struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
+				struct tcm_qla2xxx_lport, lport_wwn);
+	struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
+				struct tcm_qla2xxx_nacl, se_node_acl);
+	void *node;
+
+	pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
+
+	node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
+	if (WARN_ON(node && (node != se_nacl))) {
+		/*
+		 * The nacl no longer matches what we think it should be.
+		 * Most likely a new dynamic acl has been added while
+		 * someone dropped the hardware lock.  It clearly is a
+		 * bug elsewhere, but this bit can't make things worse.
+		 */
+		btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
+			       node, GFP_ATOMIC);
+	}
+
+	pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
+	    se_nacl, nacl->nport_wwnn, nacl->nport_id);
+	/*
+	 * Now clear the se_nacl and session pointers from our HW lport lookup
+	 * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
+	 *
+	 * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
+	 * target_wait_for_sess_cmds() before the session waits for outstanding
+	 * I/O to complete, to avoid a race between session shutdown execution
+	 * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
+	 */
+	tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
+}
+
+static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess)
+{
+	target_sess_cmd_list_set_waiting(sess->se_sess);
+}
+
+static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
+		const char *name)
+{
+	struct tcm_qla2xxx_nacl *nacl =
+		container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+	u64 wwnn;
+
+	if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
+		return -EINVAL;
+
+	nacl->nport_wwnn = wwnn;
+	tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
+
+	return 0;
+}
+
+/* Start items for tcm_qla2xxx_tpg_attrib_cit */
+
+#define DEF_QLA_TPG_ATTRIB(name)					\
+									\
+static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show(			\
+		struct config_item *item, char *page)			\
+{									\
+	struct se_portal_group *se_tpg = attrib_to_tpg(item);		\
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,		\
+			struct tcm_qla2xxx_tpg, se_tpg);		\
+									\
+	return sprintf(page, "%d\n", tpg->tpg_attrib.name);	\
+}									\
+									\
+static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store(			\
+		struct config_item *item, const char *page, size_t count) \
+{									\
+	struct se_portal_group *se_tpg = attrib_to_tpg(item);		\
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,		\
+			struct tcm_qla2xxx_tpg, se_tpg);		\
+	struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib;		\
+	unsigned long val;						\
+	int ret;							\
+									\
+	ret = kstrtoul(page, 0, &val);					\
+	if (ret < 0) {							\
+		pr_err("kstrtoul() failed with"				\
+				" ret: %d\n", ret);			\
+		return -EINVAL;						\
+	}								\
+									\
+	if ((val != 0) && (val != 1)) {					\
+		pr_err("Illegal boolean value %lu\n", val);		\
+		return -EINVAL;						\
+	}								\
+									\
+	a->name = val;							\
+									\
+	return count;							\
+}									\
+CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)
+
+DEF_QLA_TPG_ATTRIB(generate_node_acls);
+DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
+DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
+DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
+DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
+#ifdef CONFIG_TCM_QLA2XXX_DEBUG
+DEF_QLA_TPG_ATTRIB(jam_host);
+#endif
+
+static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
+	&tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,
+	&tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,
+	&tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,
+	&tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,
+	&tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,
+#ifdef CONFIG_TCM_QLA2XXX_DEBUG
+	&tcm_qla2xxx_tpg_attrib_attr_jam_host,
+#endif
+	NULL,
+};
+
+/* End items for tcm_qla2xxx_tpg_attrib_cit */
+
+static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item,
+		char *page)
+{
+	struct se_portal_group *se_tpg = to_tpg(item);
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+			struct tcm_qla2xxx_tpg, se_tpg);
+
+	return snprintf(page, PAGE_SIZE, "%d\n",
+			atomic_read(&tpg->lport_tpg_enabled));
+}
+
+static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item,
+		const char *page, size_t count)
+{
+	struct se_portal_group *se_tpg = to_tpg(item);
+	struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
+	struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
+			struct tcm_qla2xxx_lport, lport_wwn);
+	struct scsi_qla_host *vha = lport->qla_vha;
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+			struct tcm_qla2xxx_tpg, se_tpg);
+	unsigned long op;
+	int rc;
+
+	rc = kstrtoul(page, 0, &op);
+	if (rc < 0) {
+		pr_err("kstrtoul() returned %d\n", rc);
+		return -EINVAL;
+	}
+	if ((op != 1) && (op != 0)) {
+		pr_err("Illegal value for tpg_enable: %lu\n", op);
+		return -EINVAL;
+	}
+	if (op) {
+		if (atomic_read(&tpg->lport_tpg_enabled))
+			return -EEXIST;
+
+		atomic_set(&tpg->lport_tpg_enabled, 1);
+		qlt_enable_vha(vha);
+	} else {
+		if (!atomic_read(&tpg->lport_tpg_enabled))
+			return count;
+
+		atomic_set(&tpg->lport_tpg_enabled, 0);
+		qlt_stop_phase1(vha->vha_tgt.qla_tgt);
+		qlt_stop_phase2(vha->vha_tgt.qla_tgt);
+	}
+
+	return count;
+}
+
+static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
+		char *page)
+{
+	return target_show_dynamic_sessions(to_tpg(item), page);
+}
+
+static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
+		const char *page, size_t count)
+{
+	struct se_portal_group *se_tpg = to_tpg(item);
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+				struct tcm_qla2xxx_tpg, se_tpg);
+	unsigned long val;
+	int ret = kstrtoul(page, 0, &val);
+
+	if (ret) {
+		pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
+		return ret;
+	}
+	if (val != 0 && val != 1 && val != 3) {
+		pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
+		return -EINVAL;
+	}
+	tpg->tpg_attrib.fabric_prot_type = val;
+
+	return count;
+}
+
+static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
+		char *page)
+{
+	struct se_portal_group *se_tpg = to_tpg(item);
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+				struct tcm_qla2xxx_tpg, se_tpg);
+
+	return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
+}
+
+CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable);
+CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
+CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
+
+static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
+	&tcm_qla2xxx_tpg_attr_enable,
+	&tcm_qla2xxx_tpg_attr_dynamic_sessions,
+	&tcm_qla2xxx_tpg_attr_fabric_prot_type,
+	NULL,
+};
+
+static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn,
+						    const char *name)
+{
+	struct tcm_qla2xxx_lport *lport = container_of(wwn,
+			struct tcm_qla2xxx_lport, lport_wwn);
+	struct tcm_qla2xxx_tpg *tpg;
+	unsigned long tpgt;
+	int ret;
+
+	if (strstr(name, "tpgt_") != name)
+		return ERR_PTR(-EINVAL);
+	if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
+		return ERR_PTR(-EINVAL);
+
+	if ((tpgt != 1)) {
+		pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
+		return ERR_PTR(-ENOSYS);
+	}
+
+	tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
+	if (!tpg) {
+		pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
+		return ERR_PTR(-ENOMEM);
+	}
+	tpg->lport = lport;
+	tpg->lport_tpgt = tpgt;
+	/*
+	 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
+	 * NodeACLs
+	 */
+	tpg->tpg_attrib.generate_node_acls = 1;
+	tpg->tpg_attrib.demo_mode_write_protect = 1;
+	tpg->tpg_attrib.cache_dynamic_acls = 1;
+	tpg->tpg_attrib.demo_mode_login_only = 1;
+	tpg->tpg_attrib.jam_host = 0;
+
+	ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
+	if (ret < 0) {
+		kfree(tpg);
+		return NULL;
+	}
+
+	lport->tpg_1 = tpg;
+
+	return &tpg->se_tpg;
+}
+
+static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
+{
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+			struct tcm_qla2xxx_tpg, se_tpg);
+	struct tcm_qla2xxx_lport *lport = tpg->lport;
+	struct scsi_qla_host *vha = lport->qla_vha;
+	/*
+	 * Call into qla2x_target.c LLD logic to shutdown the active
+	 * FC Nexuses and disable target mode operation for this qla_hw_data
+	 */
+	if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
+		qlt_stop_phase1(vha->vha_tgt.qla_tgt);
+
+	core_tpg_deregister(se_tpg);
+	/*
+	 * Clear local TPG=1 pointer for non NPIV mode.
+	 */
+	lport->tpg_1 = NULL;
+	kfree(tpg);
+}
+
+static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
+		char *page)
+{
+	return tcm_qla2xxx_tpg_enable_show(item, page);
+}
+
+static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item,
+		const char *page, size_t count)
+{
+	struct se_portal_group *se_tpg = to_tpg(item);
+	struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
+	struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
+			struct tcm_qla2xxx_lport, lport_wwn);
+	struct scsi_qla_host *vha = lport->qla_vha;
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+			struct tcm_qla2xxx_tpg, se_tpg);
+	unsigned long op;
+	int rc;
+
+	rc = kstrtoul(page, 0, &op);
+	if (rc < 0) {
+		pr_err("kstrtoul() returned %d\n", rc);
+		return -EINVAL;
+	}
+	if ((op != 1) && (op != 0)) {
+		pr_err("Illegal value for tpg_enable: %lu\n", op);
+		return -EINVAL;
+	}
+	if (op) {
+		if (atomic_read(&tpg->lport_tpg_enabled))
+			return -EEXIST;
+
+		atomic_set(&tpg->lport_tpg_enabled, 1);
+		qlt_enable_vha(vha);
+	} else {
+		if (!atomic_read(&tpg->lport_tpg_enabled))
+			return count;
+
+		atomic_set(&tpg->lport_tpg_enabled, 0);
+		qlt_stop_phase1(vha->vha_tgt.qla_tgt);
+		qlt_stop_phase2(vha->vha_tgt.qla_tgt);
+	}
+
+	return count;
+}
+
+CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable);
+
+static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
+        &tcm_qla2xxx_npiv_tpg_attr_enable,
+        NULL,
+};
+
+static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn,
+							 const char *name)
+{
+	struct tcm_qla2xxx_lport *lport = container_of(wwn,
+			struct tcm_qla2xxx_lport, lport_wwn);
+	struct tcm_qla2xxx_tpg *tpg;
+	unsigned long tpgt;
+	int ret;
+
+	if (strstr(name, "tpgt_") != name)
+		return ERR_PTR(-EINVAL);
+	if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
+		return ERR_PTR(-EINVAL);
+
+	tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
+	if (!tpg) {
+		pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
+		return ERR_PTR(-ENOMEM);
+	}
+	tpg->lport = lport;
+	tpg->lport_tpgt = tpgt;
+
+	/*
+	 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
+	 * NodeACLs
+	 */
+	tpg->tpg_attrib.generate_node_acls = 1;
+	tpg->tpg_attrib.demo_mode_write_protect = 1;
+	tpg->tpg_attrib.cache_dynamic_acls = 1;
+	tpg->tpg_attrib.demo_mode_login_only = 1;
+
+	ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
+	if (ret < 0) {
+		kfree(tpg);
+		return NULL;
+	}
+	lport->tpg_1 = tpg;
+	return &tpg->se_tpg;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->tgt.sess_lock held
+ */
+static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(scsi_qla_host_t *vha,
+						     const be_id_t s_id)
+{
+	struct tcm_qla2xxx_lport *lport;
+	struct se_node_acl *se_nacl;
+	struct tcm_qla2xxx_nacl *nacl;
+	u32 key;
+
+	lport = vha->vha_tgt.target_lport_ptr;
+	if (!lport) {
+		pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
+		dump_stack();
+		return NULL;
+	}
+
+	key = sid_to_key(s_id);
+	pr_debug("find_sess_by_s_id: 0x%06x\n", key);
+
+	se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
+	if (!se_nacl) {
+		pr_debug("Unable to locate s_id: 0x%06x\n", key);
+		return NULL;
+	}
+	pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
+	    se_nacl, se_nacl->initiatorname);
+
+	nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+	if (!nacl->fc_port) {
+		pr_err("Unable to locate struct fc_port\n");
+		return NULL;
+	}
+
+	return nacl->fc_port;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->tgt.sess_lock held
+ */
+static void tcm_qla2xxx_set_sess_by_s_id(
+	struct tcm_qla2xxx_lport *lport,
+	struct se_node_acl *new_se_nacl,
+	struct tcm_qla2xxx_nacl *nacl,
+	struct se_session *se_sess,
+	struct fc_port *fc_port,
+	be_id_t s_id)
+{
+	u32 key;
+	void *slot;
+	int rc;
+
+	key = sid_to_key(s_id);
+	pr_debug("set_sess_by_s_id: %06x\n", key);
+
+	slot = btree_lookup32(&lport->lport_fcport_map, key);
+	if (!slot) {
+		if (new_se_nacl) {
+			pr_debug("Setting up new fc_port entry to new_se_nacl\n");
+			nacl->nport_id = key;
+			rc = btree_insert32(&lport->lport_fcport_map, key,
+					new_se_nacl, GFP_ATOMIC);
+			if (rc)
+				printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
+				    (int)key);
+		} else {
+			pr_debug("Wiping nonexisting fc_port entry\n");
+		}
+
+		fc_port->se_sess = se_sess;
+		nacl->fc_port = fc_port;
+		return;
+	}
+
+	if (nacl->fc_port) {
+		if (new_se_nacl == NULL) {
+			pr_debug("Clearing existing nacl->fc_port and fc_port entry\n");
+			btree_remove32(&lport->lport_fcport_map, key);
+			nacl->fc_port = NULL;
+			return;
+		}
+		pr_debug("Replacing existing nacl->fc_port and fc_port entry\n");
+		btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
+		fc_port->se_sess = se_sess;
+		nacl->fc_port = fc_port;
+		return;
+	}
+
+	if (new_se_nacl == NULL) {
+		pr_debug("Clearing existing fc_port entry\n");
+		btree_remove32(&lport->lport_fcport_map, key);
+		return;
+	}
+
+	pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n");
+	btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
+	fc_port->se_sess = se_sess;
+	nacl->fc_port = fc_port;
+
+	pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n",
+	    nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->tgt.sess_lock held
+ */
+static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id(
+	scsi_qla_host_t *vha,
+	const uint16_t loop_id)
+{
+	struct tcm_qla2xxx_lport *lport;
+	struct se_node_acl *se_nacl;
+	struct tcm_qla2xxx_nacl *nacl;
+	struct tcm_qla2xxx_fc_loopid *fc_loopid;
+
+	lport = vha->vha_tgt.target_lport_ptr;
+	if (!lport) {
+		pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
+		dump_stack();
+		return NULL;
+	}
+
+	pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
+
+	fc_loopid = lport->lport_loopid_map + loop_id;
+	se_nacl = fc_loopid->se_nacl;
+	if (!se_nacl) {
+		pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
+		    loop_id);
+		return NULL;
+	}
+
+	nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+
+	if (!nacl->fc_port) {
+		pr_err("Unable to locate struct fc_port\n");
+		return NULL;
+	}
+
+	return nacl->fc_port;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->tgt.sess_lock held
+ */
+static void tcm_qla2xxx_set_sess_by_loop_id(
+	struct tcm_qla2xxx_lport *lport,
+	struct se_node_acl *new_se_nacl,
+	struct tcm_qla2xxx_nacl *nacl,
+	struct se_session *se_sess,
+	struct fc_port *fc_port,
+	uint16_t loop_id)
+{
+	struct se_node_acl *saved_nacl;
+	struct tcm_qla2xxx_fc_loopid *fc_loopid;
+
+	pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
+
+	fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
+			lport->lport_loopid_map)[loop_id];
+
+	saved_nacl = fc_loopid->se_nacl;
+	if (!saved_nacl) {
+		pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
+		fc_loopid->se_nacl = new_se_nacl;
+		if (fc_port->se_sess != se_sess)
+			fc_port->se_sess = se_sess;
+		if (nacl->fc_port != fc_port)
+			nacl->fc_port = fc_port;
+		return;
+	}
+
+	if (nacl->fc_port) {
+		if (new_se_nacl == NULL) {
+			pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n");
+			fc_loopid->se_nacl = NULL;
+			nacl->fc_port = NULL;
+			return;
+		}
+
+		pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n");
+		fc_loopid->se_nacl = new_se_nacl;
+		if (fc_port->se_sess != se_sess)
+			fc_port->se_sess = se_sess;
+		if (nacl->fc_port != fc_port)
+			nacl->fc_port = fc_port;
+		return;
+	}
+
+	if (new_se_nacl == NULL) {
+		pr_debug("Clearing fc_loopid->se_nacl\n");
+		fc_loopid->se_nacl = NULL;
+		return;
+	}
+
+	pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n");
+	fc_loopid->se_nacl = new_se_nacl;
+	if (fc_port->se_sess != se_sess)
+		fc_port->se_sess = se_sess;
+	if (nacl->fc_port != fc_port)
+		nacl->fc_port = fc_port;
+
+	pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n",
+	    nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
+}
+
+/*
+ * Should always be called with qla_hw_data->tgt.sess_lock held.
+ */
+static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
+		struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess)
+{
+	struct se_session *se_sess = sess->se_sess;
+
+	tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
+				     sess, port_id_to_be_id(sess->d_id));
+	tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
+				sess, sess->loop_id);
+}
+
+static void tcm_qla2xxx_free_session(struct fc_port *sess)
+{
+	struct qla_tgt *tgt = sess->tgt;
+	struct qla_hw_data *ha = tgt->ha;
+	scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
+	struct se_session *se_sess;
+	struct tcm_qla2xxx_lport *lport;
+
+	BUG_ON(in_interrupt());
+
+	se_sess = sess->se_sess;
+	if (!se_sess) {
+		pr_err("struct fc_port->se_sess is NULL\n");
+		dump_stack();
+		return;
+	}
+
+	lport = vha->vha_tgt.target_lport_ptr;
+	if (!lport) {
+		pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
+		dump_stack();
+		return;
+	}
+	target_wait_for_sess_cmds(se_sess);
+
+	target_remove_session(se_sess);
+}
+
+static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg,
+				  struct se_session *se_sess, void *p)
+{
+	struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+				struct tcm_qla2xxx_tpg, se_tpg);
+	struct tcm_qla2xxx_lport *lport = tpg->lport;
+	struct qla_hw_data *ha = lport->qla_vha->hw;
+	struct se_node_acl *se_nacl = se_sess->se_node_acl;
+	struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
+				struct tcm_qla2xxx_nacl, se_node_acl);
+	struct fc_port *qlat_sess = p;
+	uint16_t loop_id = qlat_sess->loop_id;
+	unsigned long flags;
+
+	/*
+	 * And now setup se_nacl and session pointers into HW lport internal
+	 * mappings for fabric S_ID and LOOP_ID.
+	 */
+	spin_lock_irqsave(&ha->tgt.sess_lock, flags);
+	tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, qlat_sess,
+				     port_id_to_be_id(qlat_sess->d_id));
+	tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl,
+					se_sess, qlat_sess, loop_id);
+	spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
+
+	return 0;
+}
+
+/*
+ * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
+ * to locate struct se_node_acl
+ */
+static int tcm_qla2xxx_check_initiator_node_acl(
+	scsi_qla_host_t *vha,
+	unsigned char *fc_wwpn,
+	struct fc_port *qlat_sess)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct tcm_qla2xxx_lport *lport;
+	struct tcm_qla2xxx_tpg *tpg;
+	struct se_session *se_sess;
+	unsigned char port_name[36];
+	int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
+		       TCM_QLA2XXX_DEFAULT_TAGS;
+
+	lport = vha->vha_tgt.target_lport_ptr;
+	if (!lport) {
+		pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
+		dump_stack();
+		return -EINVAL;
+	}
+	/*
+	 * Locate the TPG=1 reference..
+	 */
+	tpg = lport->tpg_1;
+	if (!tpg) {
+		pr_err("Unable to locate struct tcm_qla2xxx_lport->tpg_1\n");
+		return -EINVAL;
+	}
+	/*
+	 * Format the FCP Initiator port_name into colon seperated values to
+	 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
+	 */
+	memset(&port_name, 0, 36);
+	snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
+	/*
+	 * Locate our struct se_node_acl either from an explict NodeACL created
+	 * via ConfigFS, or via running in TPG demo mode.
+	 */
+	se_sess = target_setup_session(&tpg->se_tpg, num_tags,
+				       sizeof(struct qla_tgt_cmd),
+				       TARGET_PROT_ALL, port_name,
+				       qlat_sess, tcm_qla2xxx_session_cb);
+	if (IS_ERR(se_sess))
+		return PTR_ERR(se_sess);
+
+	return 0;
+}
+
+static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id,
+				    uint16_t loop_id, bool conf_compl_supported)
+{
+	struct qla_tgt *tgt = sess->tgt;
+	struct qla_hw_data *ha = tgt->ha;
+	scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
+	struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
+	struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
+	struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
+			struct tcm_qla2xxx_nacl, se_node_acl);
+	u32 key;
+
+
+	if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24)
+		pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
+		    sess, sess->port_name,
+		    sess->loop_id, loop_id, sess->d_id.b.domain,
+		    sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain,
+		    s_id.b.area, s_id.b.al_pa);
+
+	if (sess->loop_id != loop_id) {
+		/*
+		 * Because we can shuffle loop IDs around and we
+		 * update different sessions non-atomically, we might
+		 * have overwritten this session's old loop ID
+		 * already, and we might end up overwriting some other
+		 * session that will be updated later.  So we have to
+		 * be extra careful and we can't warn about those things...
+		 */
+		if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
+			lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
+
+		lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
+
+		sess->loop_id = loop_id;
+	}
+
+	if (sess->d_id.b24 != s_id.b24) {
+		key = (((u32) sess->d_id.b.domain << 16) |
+		       ((u32) sess->d_id.b.area   <<  8) |
+		       ((u32) sess->d_id.b.al_pa));
+
+		if (btree_lookup32(&lport->lport_fcport_map, key))
+			WARN(btree_remove32(&lport->lport_fcport_map, key) !=
+			    se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n",
+			    sess->d_id.b.domain, sess->d_id.b.area,
+			    sess->d_id.b.al_pa);
+		else
+			WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
+			     sess->d_id.b.domain, sess->d_id.b.area,
+			     sess->d_id.b.al_pa);
+
+		key = (((u32) s_id.b.domain << 16) |
+		       ((u32) s_id.b.area   <<  8) |
+		       ((u32) s_id.b.al_pa));
+
+		if (btree_lookup32(&lport->lport_fcport_map, key)) {
+			WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
+			     s_id.b.domain, s_id.b.area, s_id.b.al_pa);
+			btree_update32(&lport->lport_fcport_map, key, se_nacl);
+		} else {
+			btree_insert32(&lport->lport_fcport_map, key, se_nacl,
+			    GFP_ATOMIC);
+		}
+
+		sess->d_id = s_id;
+		nacl->nport_id = key;
+	}
+
+	sess->conf_compl_supported = conf_compl_supported;
+
+}
+
+/*
+ * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
+ */
+static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
+	.find_cmd_by_tag	= tcm_qla2xxx_find_cmd_by_tag,
+	.handle_cmd		= tcm_qla2xxx_handle_cmd,
+	.handle_data		= tcm_qla2xxx_handle_data,
+	.handle_tmr		= tcm_qla2xxx_handle_tmr,
+	.get_cmd		= tcm_qla2xxx_get_cmd,
+	.rel_cmd		= tcm_qla2xxx_rel_cmd,
+	.free_cmd		= tcm_qla2xxx_free_cmd,
+	.free_mcmd		= tcm_qla2xxx_free_mcmd,
+	.free_session		= tcm_qla2xxx_free_session,
+	.update_sess		= tcm_qla2xxx_update_sess,
+	.check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
+	.find_sess_by_s_id	= tcm_qla2xxx_find_sess_by_s_id,
+	.find_sess_by_loop_id	= tcm_qla2xxx_find_sess_by_loop_id,
+	.clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
+	.put_sess		= tcm_qla2xxx_put_sess,
+	.shutdown_sess		= tcm_qla2xxx_shutdown_sess,
+	.get_dif_tags		= tcm_qla2xxx_dif_tags,
+	.chk_dif_tags		= tcm_qla2xxx_chk_dif_tags,
+};
+
+static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
+{
+	int rc;
+
+	rc = btree_init32(&lport->lport_fcport_map);
+	if (rc) {
+		pr_err("Unable to initialize lport->lport_fcport_map btree\n");
+		return rc;
+	}
+
+	lport->lport_loopid_map =
+		vzalloc(array_size(65536,
+				   sizeof(struct tcm_qla2xxx_fc_loopid)));
+	if (!lport->lport_loopid_map) {
+		pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
+		    sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
+		btree_destroy32(&lport->lport_fcport_map);
+		return -ENOMEM;
+	}
+	pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
+	       sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
+	return 0;
+}
+
+static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
+					 void *target_lport_ptr,
+					 u64 npiv_wwpn, u64 npiv_wwnn)
+{
+	struct qla_hw_data *ha = vha->hw;
+	struct tcm_qla2xxx_lport *lport =
+			(struct tcm_qla2xxx_lport *)target_lport_ptr;
+	/*
+	 * Setup tgt_ops, local pointer to vha and target_lport_ptr
+	 */
+	ha->tgt.tgt_ops = &tcm_qla2xxx_template;
+	vha->vha_tgt.target_lport_ptr = target_lport_ptr;
+	lport->qla_vha = vha;
+
+	return 0;
+}
+
+static struct se_wwn *tcm_qla2xxx_make_lport(
+	struct target_fabric_configfs *tf,
+	struct config_group *group,
+	const char *name)
+{
+	struct tcm_qla2xxx_lport *lport;
+	u64 wwpn;
+	int ret = -ENODEV;
+
+	if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
+		return ERR_PTR(-EINVAL);
+
+	lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
+	if (!lport) {
+		pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
+		return ERR_PTR(-ENOMEM);
+	}
+	lport->lport_wwpn = wwpn;
+	tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
+				wwpn);
+	sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
+
+	ret = tcm_qla2xxx_init_lport(lport);
+	if (ret != 0)
+		goto out;
+
+	ret = qlt_lport_register(lport, wwpn, 0, 0,
+				 tcm_qla2xxx_lport_register_cb);
+	if (ret != 0)
+		goto out_lport;
+
+	return &lport->lport_wwn;
+out_lport:
+	vfree(lport->lport_loopid_map);
+	btree_destroy32(&lport->lport_fcport_map);
+out:
+	kfree(lport);
+	return ERR_PTR(ret);
+}
+
+static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
+{
+	struct tcm_qla2xxx_lport *lport = container_of(wwn,
+			struct tcm_qla2xxx_lport, lport_wwn);
+	struct scsi_qla_host *vha = lport->qla_vha;
+	struct se_node_acl *node;
+	u32 key = 0;
+
+	/*
+	 * Call into qla2x_target.c LLD logic to complete the
+	 * shutdown of struct qla_tgt after the call to
+	 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
+	 */
+	if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
+		qlt_stop_phase2(vha->vha_tgt.qla_tgt);
+
+	qlt_lport_deregister(vha);
+
+	vfree(lport->lport_loopid_map);
+	btree_for_each_safe32(&lport->lport_fcport_map, key, node)
+		btree_remove32(&lport->lport_fcport_map, key);
+	btree_destroy32(&lport->lport_fcport_map);
+	kfree(lport);
+}
+
+static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
+					      void *target_lport_ptr,
+					      u64 npiv_wwpn, u64 npiv_wwnn)
+{
+	struct fc_vport *vport;
+	struct Scsi_Host *sh = base_vha->host;
+	struct scsi_qla_host *npiv_vha;
+	struct tcm_qla2xxx_lport *lport =
+			(struct tcm_qla2xxx_lport *)target_lport_ptr;
+	struct tcm_qla2xxx_lport *base_lport =
+			(struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
+	struct fc_vport_identifiers vport_id;
+
+	if (qla_ini_mode_enabled(base_vha)) {
+		pr_err("qla2xxx base_vha not enabled for target mode\n");
+		return -EPERM;
+	}
+
+	if (!base_lport || !base_lport->tpg_1 ||
+	    !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
+		pr_err("qla2xxx base_lport or tpg_1 not available\n");
+		return -EPERM;
+	}
+
+	memset(&vport_id, 0, sizeof(vport_id));
+	vport_id.port_name = npiv_wwpn;
+	vport_id.node_name = npiv_wwnn;
+	vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
+	vport_id.vport_type = FC_PORTTYPE_NPIV;
+	vport_id.disable = false;
+
+	vport = fc_vport_create(sh, 0, &vport_id);
+	if (!vport) {
+		pr_err("fc_vport_create failed for qla2xxx_npiv\n");
+		return -ENODEV;
+	}
+	/*
+	 * Setup local pointer to NPIV vhba + target_lport_ptr
+	 */
+	npiv_vha = (struct scsi_qla_host *)vport->dd_data;
+	npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
+	lport->qla_vha = npiv_vha;
+	scsi_host_get(npiv_vha->host);
+	return 0;
+}
+
+
+static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
+	struct target_fabric_configfs *tf,
+	struct config_group *group,
+	const char *name)
+{
+	struct tcm_qla2xxx_lport *lport;
+	u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
+	char *p, tmp[128];
+	int ret;
+
+	snprintf(tmp, 128, "%s", name);
+
+	p = strchr(tmp, '@');
+	if (!p) {
+		pr_err("Unable to locate NPIV '@' separator\n");
+		return ERR_PTR(-EINVAL);
+	}
+	*p++ = '\0';
+
+	if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
+		return ERR_PTR(-EINVAL);
+
+	if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
+				       &npiv_wwpn, &npiv_wwnn) < 0)
+		return ERR_PTR(-EINVAL);
+
+	lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
+	if (!lport) {
+		pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
+		return ERR_PTR(-ENOMEM);
+	}
+	lport->lport_npiv_wwpn = npiv_wwpn;
+	lport->lport_npiv_wwnn = npiv_wwnn;
+	sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
+
+	ret = tcm_qla2xxx_init_lport(lport);
+	if (ret != 0)
+		goto out;
+
+	ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
+				 tcm_qla2xxx_lport_register_npiv_cb);
+	if (ret != 0)
+		goto out_lport;
+
+	return &lport->lport_wwn;
+out_lport:
+	vfree(lport->lport_loopid_map);
+	btree_destroy32(&lport->lport_fcport_map);
+out:
+	kfree(lport);
+	return ERR_PTR(ret);
+}
+
+static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
+{
+	struct tcm_qla2xxx_lport *lport = container_of(wwn,
+			struct tcm_qla2xxx_lport, lport_wwn);
+	struct scsi_qla_host *npiv_vha = lport->qla_vha;
+	struct qla_hw_data *ha = npiv_vha->hw;
+	scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
+
+	scsi_host_put(npiv_vha->host);
+	/*
+	 * Notify libfc that we want to release the vha->fc_vport
+	 */
+	fc_vport_terminate(npiv_vha->fc_vport);
+	scsi_host_put(base_vha->host);
+	kfree(lport);
+}
+
+
+static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
+		char *page)
+{
+	return sprintf(page,
+	    "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n",
+	    QLA2XXX_VERSION, utsname()->sysname,
+	    utsname()->machine, utsname()->release);
+}
+
+CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
+
+static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
+	&tcm_qla2xxx_wwn_attr_version,
+	NULL,
+};
+
+static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
+	.module				= THIS_MODULE,
+	.fabric_name			= "qla2xxx",
+	.node_acl_size			= sizeof(struct tcm_qla2xxx_nacl),
+	/*
+	 * XXX: Limit assumes single page per scatter-gather-list entry.
+	 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
+	 */
+	.max_data_sg_nents		= 1200,
+	.tpg_get_wwn			= tcm_qla2xxx_get_fabric_wwn,
+	.tpg_get_tag			= tcm_qla2xxx_get_tag,
+	.tpg_check_demo_mode		= tcm_qla2xxx_check_demo_mode,
+	.tpg_check_demo_mode_cache	= tcm_qla2xxx_check_demo_mode_cache,
+	.tpg_check_demo_mode_write_protect =
+					tcm_qla2xxx_check_demo_write_protect,
+	.tpg_check_prod_mode_write_protect =
+					tcm_qla2xxx_check_prod_write_protect,
+	.tpg_check_prot_fabric_only	= tcm_qla2xxx_check_prot_fabric_only,
+	.tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
+	.tpg_get_inst_index		= tcm_qla2xxx_tpg_get_inst_index,
+	.check_stop_free		= tcm_qla2xxx_check_stop_free,
+	.release_cmd			= tcm_qla2xxx_release_cmd,
+	.close_session			= tcm_qla2xxx_close_session,
+	.sess_get_index			= tcm_qla2xxx_sess_get_index,
+	.sess_get_initiator_sid		= NULL,
+	.write_pending			= tcm_qla2xxx_write_pending,
+	.set_default_node_attributes	= tcm_qla2xxx_set_default_node_attrs,
+	.get_cmd_state			= tcm_qla2xxx_get_cmd_state,
+	.queue_data_in			= tcm_qla2xxx_queue_data_in,
+	.queue_status			= tcm_qla2xxx_queue_status,
+	.queue_tm_rsp			= tcm_qla2xxx_queue_tm_rsp,
+	.aborted_task			= tcm_qla2xxx_aborted_task,
+	/*
+	 * Setup function pointers for generic logic in
+	 * target_core_fabric_configfs.c
+	 */
+	.fabric_make_wwn		= tcm_qla2xxx_make_lport,
+	.fabric_drop_wwn		= tcm_qla2xxx_drop_lport,
+	.fabric_make_tpg		= tcm_qla2xxx_make_tpg,
+	.fabric_drop_tpg		= tcm_qla2xxx_drop_tpg,
+	.fabric_init_nodeacl		= tcm_qla2xxx_init_nodeacl,
+
+	.tfc_wwn_attrs			= tcm_qla2xxx_wwn_attrs,
+	.tfc_tpg_base_attrs		= tcm_qla2xxx_tpg_attrs,
+	.tfc_tpg_attrib_attrs		= tcm_qla2xxx_tpg_attrib_attrs,
+};
+
+static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
+	.module				= THIS_MODULE,
+	.fabric_name			= "qla2xxx_npiv",
+	.node_acl_size			= sizeof(struct tcm_qla2xxx_nacl),
+	.tpg_get_wwn			= tcm_qla2xxx_get_fabric_wwn,
+	.tpg_get_tag			= tcm_qla2xxx_get_tag,
+	.tpg_check_demo_mode		= tcm_qla2xxx_check_demo_mode,
+	.tpg_check_demo_mode_cache	= tcm_qla2xxx_check_demo_mode_cache,
+	.tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
+	.tpg_check_prod_mode_write_protect =
+	    tcm_qla2xxx_check_prod_write_protect,
+	.tpg_check_demo_mode_login_only	= tcm_qla2xxx_check_demo_mode_login_only,
+	.tpg_get_inst_index		= tcm_qla2xxx_tpg_get_inst_index,
+	.check_stop_free                = tcm_qla2xxx_check_stop_free,
+	.release_cmd			= tcm_qla2xxx_release_cmd,
+	.close_session			= tcm_qla2xxx_close_session,
+	.sess_get_index			= tcm_qla2xxx_sess_get_index,
+	.sess_get_initiator_sid		= NULL,
+	.write_pending			= tcm_qla2xxx_write_pending,
+	.set_default_node_attributes	= tcm_qla2xxx_set_default_node_attrs,
+	.get_cmd_state			= tcm_qla2xxx_get_cmd_state,
+	.queue_data_in			= tcm_qla2xxx_queue_data_in,
+	.queue_status			= tcm_qla2xxx_queue_status,
+	.queue_tm_rsp			= tcm_qla2xxx_queue_tm_rsp,
+	.aborted_task			= tcm_qla2xxx_aborted_task,
+	/*
+	 * Setup function pointers for generic logic in
+	 * target_core_fabric_configfs.c
+	 */
+	.fabric_make_wwn		= tcm_qla2xxx_npiv_make_lport,
+	.fabric_drop_wwn		= tcm_qla2xxx_npiv_drop_lport,
+	.fabric_make_tpg		= tcm_qla2xxx_npiv_make_tpg,
+	.fabric_drop_tpg		= tcm_qla2xxx_drop_tpg,
+	.fabric_init_nodeacl		= tcm_qla2xxx_init_nodeacl,
+
+	.tfc_wwn_attrs			= tcm_qla2xxx_wwn_attrs,
+	.tfc_tpg_base_attrs		= tcm_qla2xxx_npiv_tpg_attrs,
+};
+
+static int tcm_qla2xxx_register_configfs(void)
+{
+	int ret;
+
+	pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n",
+	    QLA2XXX_VERSION, utsname()->sysname,
+	    utsname()->machine, utsname()->release);
+
+	ret = target_register_template(&tcm_qla2xxx_ops);
+	if (ret)
+		return ret;
+
+	ret = target_register_template(&tcm_qla2xxx_npiv_ops);
+	if (ret)
+		goto out_fabric;
+
+	tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
+						WQ_MEM_RECLAIM, 0);
+	if (!tcm_qla2xxx_free_wq) {
+		ret = -ENOMEM;
+		goto out_fabric_npiv;
+	}
+
+	return 0;
+
+out_fabric_npiv:
+	target_unregister_template(&tcm_qla2xxx_npiv_ops);
+out_fabric:
+	target_unregister_template(&tcm_qla2xxx_ops);
+	return ret;
+}
+
+static void tcm_qla2xxx_deregister_configfs(void)
+{
+	destroy_workqueue(tcm_qla2xxx_free_wq);
+
+	target_unregister_template(&tcm_qla2xxx_ops);
+	target_unregister_template(&tcm_qla2xxx_npiv_ops);
+}
+
+static int __init tcm_qla2xxx_init(void)
+{
+	int ret;
+
+	BUILD_BUG_ON(sizeof(struct abts_recv_from_24xx) != 64);
+	BUILD_BUG_ON(sizeof(struct abts_resp_from_24xx_fw) != 64);
+	BUILD_BUG_ON(sizeof(struct atio7_fcp_cmnd) != 32);
+	BUILD_BUG_ON(sizeof(struct atio_from_isp) != 64);
+	BUILD_BUG_ON(sizeof(struct ba_acc_le) != 12);
+	BUILD_BUG_ON(sizeof(struct ba_rjt_le) != 4);
+	BUILD_BUG_ON(sizeof(struct ctio7_from_24xx) != 64);
+	BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64);
+	BUILD_BUG_ON(sizeof(struct ctio_crc2_to_fw) != 64);
+	BUILD_BUG_ON(sizeof(struct ctio_crc_from_fw) != 64);
+	BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64);
+	BUILD_BUG_ON(sizeof(struct fcp_hdr) != 24);
+	BUILD_BUG_ON(sizeof(struct fcp_hdr_le) != 24);
+	BUILD_BUG_ON(sizeof(struct nack_to_isp) != 64);
+
+	ret = tcm_qla2xxx_register_configfs();
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static void __exit tcm_qla2xxx_exit(void)
+{
+	tcm_qla2xxx_deregister_configfs();
+}
+
+MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
+MODULE_LICENSE("GPL");
+module_init(tcm_qla2xxx_init);
+module_exit(tcm_qla2xxx_exit);